IV CONTENTS. [Vol. 41 



Page. 



[Report of work with potatoes in the Rhine Province], Remy 643 



The relation of climatic conditions to rice, de Peralta y Leafio 643 



Rice [In Tucuraan], Raben 643 



South Bali [Dutch East Indies] and its rice culture, van der Veer 643 



The place of rye in American agriculture, Leighty 643 



The composition of the [sugar cane] planting, 1918-19, van Harreveld 644 



Sweet potatoes, Cole, Tharp, and Minter 644 



The tobacco seedbed, David 644 



Selection studies with Deli tobacco, Honing 644 



Crop rotation and fertilizer experiments. Miller and Duley 644 



The cultivation of wheat in Argentina, III, IV, Girola 645 



Fertile wheat-rye hybrids, Love and Craig 645 



Some effects of the war on the seed industry, Wheelei' and Edler 645 



Second annual report Colorado Seed Laboratory, Robbins 645 



Seed Reporter 645 



The identification and control of Colorado weeds, Robbins and Boyack 646 



Weed immigration into Michigan, Darlington 646 



The weeds of wheat on the pampas [Argentina], Williamson 646 



Devitalization of the seed of Cuscuta, Bresaola 646 



HOBTICTTLTUBE. 



Carbohydrate metabolism in green corn, Appleman and Arthur 646 



Greenhouse tomato growing in Virginia, Zimmerley 647 



Gardens in France, Belgium, and occupied territory, Truffaut and Colt 648 



[Work \\'lth vegetables and fruit at the Valentine substation]. Cowan 648 



[Progress report on horticultural investigations] 648 



Report of the Lamao Experiment Station 650 



F'ruit growing and training, Vercier 650 



The culture of tree fruits, Gressent 650 



Orchard management, Sandsten 650 



The commercial apple industry in the United States, Folger 650 



Report of division of horticulture, Pillsbury 650 



Dried wine grapes 651 



Certain relationships between the flowers and fruits of the lemon, Reed__ 651 



rOEESTEY. 



The book of the National Parks, Yard 651 



Farm woodlands and the war. Graves 651 



[Progress report on forestry investigations] 652 



Forest administration in Assam 1917-18, Blunt and Tottenham 652 



Poorest administration in Coorg for the year 1917-18, Tireman 652 



[Report on tree culture in the northern Nebraska sand hills], Cowan 652 



Afforestation: Its practice and science, Duchesne 652 



Reafforestation with conifer trees, Breton-Bonnard 652 



Effect of removing pulp from camphor seed, Russell 652 



Origin of chicle, with descriptions of two new species of Achras, Pittier__ 653 



The European elder {Smnbucvs nigra), Degli Atti 653 



The strawberry tree and its utilization. La Marca 653 



Variation in Hevea hrasiliensis, Whitby 653 



Selection and thinning, Rutgers 653 



DISEASES OF PLANTS. 



Pan American cooperation in plant quarantine, Sundberg 654 



Pan American cooperation in plant quarantine, Marlatt 654 



Phytopathological inspection of horticultural establishments 654 



Seed and soil treatment for vegetable diseases. Cook 654 



[Work done in plant pathology], Coons 6-54 



[Report of the department of] botany, Reed et al 654 



Damage from soil fungi, Seaver 655 



